Tonic pupil

Labelled Diagram of the Eye

Labelled diagram of the structure of the retina

Tonic Pupil is a term whose meaning is the same as Adie's Pupil.

It is also known as:

  • Adie's Tonic Pupil,
  • Adie Syndrome and as
  • Holmes-Adie's Syndrome, among other names.

Tonic Pupil refers to a neurological condition affecting the pupil of an eye and the autonomic nervous system.

Affected pupils are "dilated", that is the dark/black central "pupil" is larger than normal, due to damage to the nerves to the ciliary muscle (of the eye) and the iris (of the eye).
Tonic Pupil
s react abnormally poorly to changes in light level.

Tonic Pupils are also characterized by high sensitivity to dilute 0.1% pilocarpine drops - which barely affect normal pupils but cause marked constriction (reduction in size) of Tonic Pupil.

This condition is not life-threatening.

Both eyes may be affected (bilateral) but in most cases only one eye is affected (unilateral).

More about Ophthalmology:

This section includes short definitions of many diseases, disorders, and conditions of the eyes and visual system.
For definitions of other terms in this category, choose from the list to the left (but note that this is not a complete/exhaustive list).

Other related pages include

For further information see also our pages of books about ophthalmology.

The following books may also be of interest:

The Aging Eye (Harvard Medical School)
MCQ Companion to the Eye (Textbook)
The Secret of Perfect Vision: How You Can Prevent and Reverse Nearsightedness
What Your Doctor May Not Tell You About(TM) Glaucoma: The Essential Treatments and Advances That Could Save Your Sight

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